<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta name="Keywords" content="danmu">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>弹幕网站</title>
<style type="text/css">
body {
background: url(images/求少司命.jpg); 
background-position:top center;
background-repeat:no-repeat;
width:1920px;
height:100%;
font-size: 12px;
font-family: "微软雅黑";
}


* {
margin: 0;
padding: 0;
}
/* screen start*/
.screen {
width: 300px;
height: 100px;
background: #669900;
}


.dm {
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
display: none;
}


.dm .d_screen .d_del {
width: 38px;
height: 38px;
background: #600;
display: block;
text-align: center;
line-height: 38px;
text-decoration: none;
font-size: 20px;
color: #fff;
border-radius: 19px;
border: 1px solid #fff;
z-index: 2;
position: absolute;
right: 20px;
top: 20px;
outline: none;
}


.dm .d_screen .d_del:hover {
background: #F00;
}


.dm .d_screen .d_mask {
width: 100%;
height: 100%;
background: #000;
position: absolute;
top: 0;
left: 0;
opacity: 0.6;
filter: alpha(opacity = 60);
z-index: 1;
}


.dm .d_screen .d_show {
position: relative;
z-index: 2;
}


.dm .d_screen .d_show div {
font-size: 26px;
line-height: 36px;
font-weight: 500;
position: absolute;
top: 76px;
left: 10;
color: #fff;
}
/*end screen*/


/*send start*/
.send {
width: 100%;
height: 76px;
position: absolute;
bottom: 0;
left: 0;
border: 1px solid red;
}


.send .s_filter {
width: 100%;
height: 76px;
background: #000;
position: absolute;
bottom: 0;
left: 0;
opacity: 0.6;
filter: alpha(opacity = 60);
}


.send  .s_con {
width: 100%;
height: 76px;
position: absolute;
top: 0;
left: 0;
z-index: 2;
text-align: center;
line-height: 76px;
}


.send .s_con .s_text {
width: 800px;
height: 36px;
border: 0;
border-radius: 6px 0 0 6px;
outline: none;
}


.send .s_con .s_submit {
width: 100px;
height: 36px;
border-radius: 0 6px 6px 0;
outline: none;
font-size: 14px;
color: #fff;
background: #65c33d;
font-family: "微软雅黑";
cursor: pointer;
border: 1px solid #5bba32;
}


.send .s_con .s_submit:hover {
background: #3eaf0e;
}
/*end send*/
</style>


</head>
<body>
<a href="#" id="startDm">开启弹幕</a>
<!-- dm start -->
<div class="dm">
<!-- d_screen start -->
<div class="d_screen">
<a href="#" class="d_del">X</a>
<div class="d_mask"></div>
<div class="d_show">
</div>
</div>
<!-- end d_screen -->


<!-- send start -->
<div class="send">
<div class="s_filter"></div>
<div class="s_con">
<input type="text" class="s_text" /> <input type="button"
value="发表评论" class="s_submit" id="btn"/>
</div>
</div>
<!-- end send -->
</div>
<!-- end dm-->
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script>
<!-- <script type="text/javascript" src="websocket.js"></script> -->
<script type="text/javascript">
$(function() {

$("#startDm,.d_del").click(function() {
$("#startDm,.dm").toggle(1000);
//init_screen();
});
$("#btn").click(function(){
send();
});
$(".s_text").keydown(function() {
var code = window.event.keyCode;





if (code == 13)//回车键按下时，输出到弹幕


{
send();
}
});


});


function launch()
{

var _height = $(window).height();
var _left = $(window).width() - $("#"+index).width();
var time=10000;
if(index%2==0)
time=20000;
_top+=80;
if(_top>_height-100)
_top=80;
$("#"+index).css({
left:_left,
top:_top,
color:getRandomColor()

});
$("#"+index).animate({
left:"-"+_left+"px"},
time,
function(){});
index++;
}



/* //初始化弹幕
function init_screen() {
var _top = 0;
var _height = $(window).height();
$(".d_show").find("div").show().each(function() {
var _left = $(window).width() - $(this).width();
var time=10000;
if($(this).index()%2==0)
time=20000;
_top+=80;
if(_top>_height-100)
_top=80;
$(this).css({
left:_left,
top:_top,
color:getRandomColor()

});
$(this).animate({
left:"-"+_left+"px"},
time,
function(){});


});
} */

//随机获取颜色值
function getRandomColor() {
return '#' + (function(h) {
return new Array(7 - h.length).join("0") + h
})((Math.random() * 0x1000000 << 0).toString(16))
}
//websocket.js
//websocket.js文件代码

var websocket=null;
var _top=80;
var index=0;

var host=window.location.host;
//判断当前浏览器是否支持WebSocket
if('WebSocket' in window){
websocket=new WebSocket("ws://"+host+"/Barrage/socket");
}
else{
alert("Not Support WebSocket!");
}


//连接发生错误的回调方法
websocket.onerror = function(){
    setMessageInnerHTML("error");
};
 
//连接成功建立的回调方法
websocket.onopen = function(event){
    setMessageInnerHTML("open");
}
 
//接收到消息的回调方法
websocket.onmessage = function(){
    setMessageInnerHTML(event.data);
}
 
//连接关闭的回调方法
websocket.onclose = function(){
    setMessageInnerHTML("close");
}


//监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
window.onbeforeunload = function(){
    websocket.close();
}


//将消息显示在网页上
function setMessageInnerHTML(innerHTML){
$(".d_show").append("<div id='"+index+"'>"+ innerHTML + "</div>");
launch();
}


//发送消息
function send(){
    //var message = document.getElementById('text').value;
    var message = $(".s_text").val();
    $(".s_text").val("");
    websocket.send(message);
}
</script>

</body>
</html>

